Lifetime
Part of speech: noun
Definition: The duration of the life of someone or something. A long period of time.
Lifelong
Part of speech: adjective
Definition: Extending for the entire duration of life.
Lifetime as a noun is the duration of the life of someone or something. while Lifelong as an adjective is extending for the entire duration of life.
Part of speech: noun
Definition: The duration of the life of someone or something. A long period of time.
Part of speech: adjective
Definition: Extending for the entire duration of life.
We hope you now know whether to use Lifetime or Lifelong in your sentence.